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Hereditary Nasal Parakeratosis/Dry Nose (Labrador Retriever Type) Overview

Hereditary Nasal Parakeratosis/Dry Nose (Labrador Retriever Type)
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Category: Dermatologic - Associated with the skin

Gene: Suppressor of variegation 3-9 homolog 2 (SUV39H2) on chromosome 2

Variant Detected: Base Substitution c.972T>G p.Asn324Lys

Severity: Low. This disease generally causes mild signs of disease, or can be quite easily treated/managed.

Mode of Inheritance: Autosomal Recessive

Test Overview: Also referred to as Hereditary Nasal Parakeratosis (HNPK). Affected dogs begin showing clinical signs around six to twelve months of age. They develop dry, rough crusts on the tip of the nose. In extreme cases, the dog’s nose will crack causing severe discomfort. Lesions can occur on the area around the nose. The noses of these affected dogs are prone to bacterial infections and can lose pigment over time. This disorder may be treated with veterinary consultation and topical therapy.

Research Citation(s): Jagannathan V, et al. A mutation in the SUV39H2 gene in Labrador Retrievers with hereditary nasal parakeratosis (HNPK) provides insights into the epigenetics of keratinocyte differentiation. (2013) PLoS Genet, 9;10,e1003848.

Associated Breed(s): Labradoodle ,  Labrador Retriever,  Mixed Breed,  Australian Labradoodle ,  Australian Cobberdog,  Labradoodle Retrodoodle ,